-97.1% is the change from 276 to 8
Calculation steps:
[( 8 - 276 ) ÷ 276] x 100 = -97.1%
Formula
Percentage change = [(8 - 276) / 276] x 100
Subtract the new number by the original number
8 - 276 = -268
-268 ÷ 276 = -0.9710144927536232
-0.9710144927536232 x 100 = -97.1%